code: def test_buffer_flatten_preserves_identity():
      """Flattening a 1-d buffer should return the original"""
      buf = tvm.tir.decl_buffer([16])
      flat = buf.get_flattened_buffer()
      assert buf.same_as(flat)
  
file_path: tvm/tests/python/tir-base/test_tir_buffer.py
imports: import pytest
  import tvm
  import tvm.testing
  from tvm import te
  from tvm.tir import Buffer
  import numpy
label_desc: Use image node_id 11 for calling a global function with example usage: test_buffer_flatten_preserves_identity() without return types